Importance

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Abstract

The present disclosure discloses a method for preparing hydrogen from secondary aluminum ash, including the following steps: S1. preparing secondary aluminum ash, and subjecting a reaction device to an oxygen replacement treatment; S2. feeding the secondary aluminum ash into the reaction device, adding water, conducting a first hydrolysis reaction to obtain a first gas, and introducing the first gas into a gas collection cabinet; S3. adding calcium hydroxide and sodium hydroxide subsequently to the reaction device, conducting a second hydrolysis reaction to obtain a second gas, and introducing the second gas into the gas collection cabinet; and S4. subjecting a gas mixture in the gas collection cabinet to separation and purification to obtain hydrogen. The method is conducive to improving a hydrogen yield and reducing the toxicity of process products.

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First Claim